INTEGUMENT. Surface Anatomy. Palpation Bony landmarks Dermatomes Neural assessment. Integument Histology. Epidermis: Stratified squamous epithelium Resting on: Basement membrane Resting on: Dermis: Dense irregular connective tissue. Epidermis.
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Stratified squamous epithelium
Dense irregular connective tissue
Area of high mitotic activity.
The cells in this layer are dead and keratinized.
Decrease with age.
Vellus represents 95% of the hair coverage in males.
Vellus represents 35% of the hair coverage in females.
Made up of dead cornified epidermal cells.
Derived from both epidermis and dermis.
Scalp hair = 2-3 years
Eyebrow hair = 3-4 months
Modified stratum corneum
Avascular and not innervated
Travels over a nail bed guided by lateral nail grooves
Stratum germinativum produces ungis
Passed off to keratinocytes (cells of epidermis).
Phagocytized by keratinocytes.
Incisions normally made parallel to Langer’s lines